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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 14 |
| 4 | 36 |
| 5 | 27 |
| 6 | 590 |
| 7 | 3024 |
| 8 | 6156 |
| 9 | 5832 |
| 10 | 2187 |
| 11 | 1044302 |
| 12 | 10704960 |
| 13 | 49225968 |
| 14 | 132339744 |
| 15 | 227246796 |
| 16 | 255091680 |
| 17 | 182815704 |
| 18 | 76527504 |
| 19 | 14348907 |
| 20 | 3271700001614 |
| 21 | 67075266827520 |
| 22 | 652229166810816 |
| 23 | 3990988066439808 |
| 24 | 17193623473530864 |
| 25 | 55281675697126272 |
[1,2,3,14,36,27,590,3024,6156,5832,2187,1044302, 10704960,49225968,132339744,227246796,255091680, 182815704,76527504,14348907,3271700001614, 67075266827520,652229166810816,3990988066439808, 17193623473530864,55281675697126272] |